[Feature Request] Add manual expansion control for pasted text in prompts

Bug Description
When I paste text in the prompt I sometimes want to modify the text before submitting (as I'm copying from the output of a previous prompt or another agent), I also appreciate having condensed/collapsed paste references, so it would be useful if there was a way to manually expand pasted text.

Environment Info

• Platform: darwin
• Terminal: vscode
• Version: 2.1.112
• Feedback ID: 04299b69-d8e5-43f9-8bf9-7e31b8bb8cc1

Errors

[{"error":"Error: NON-FATAL: Lock acquisition failed for /Users/seanconner/.local/share/claude/versions/2.1.112 (expected in multi-process scenarios)\n    at Od_ (/$bunfs/root/src/entrypoints/cli.js:2748:2177)\n    at Ke6 (/$bunfs/root/src/entrypoints/cli.js:2748:1257)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-26T10:50:41.421Z"},{"error":"AxiosError: Request failed with status code 404\n    at XU (/$bunfs/root/src/entrypoints/cli.js:110:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:115:12736)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:865:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:117:2467)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-27T03:04:16.385Z"},{"error":"AxiosError: Request failed with status code 404\n    at XU (/$bunfs/root/src/entrypoints/cli.js:110:1194)\n    at <anonymous> (/$bunfs/root/src/entrypoints/cli.js:115:12736)\n    at emit (node:events:92:22)\n    at endReadableNT (internal:streams/readable:865:50)\n    at processTicksAndRejections (native:7:39)\n    at request (/$bunfs/root/src/entrypoints/cli.js:117:2467)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-27T03:08:23.307Z"},{"error":"Error: File does not exist. Note: your current working directory is /Users/seanconner.\n    at call (/$bunfs/root/src/entrypoints/cli.js:4727:7630)\n    at processTicksAndRejections (native:7:39)","timestamp":"2026-04-27T03:10:25.207Z"}]